Is it possible to correct a payroll overpayment after the month is occurred is already reconciled? The overpayment was never re-paid.

Thanks for reaching out to us about this payroll overpayment concern, @ShellyP1.

I want to share some insights about posting entries to a reconciled account.

Adding transactions to a previously reconciled account changes the register's balance. This means that you have to re-reconcile the account to make sure the beginning balance of the next period is correct.

You can enter the transaction in QuickBooks as a check, expense or journal entry. You can find these options by clicking the + New icon.

Once you have entered the transaction, you can manually reconcile the entry. Here's how:

1. Click the Gear icon.
2. Tap Chart of Accounts.
3. Find the account you want to review.
4. From the Action column, click View register or Account History.
5. Locate the entry from the list and make sure the status column (indicated by a check mark) show a code R (Reconciled).
6. If it doesn't, click the field to change the reconcile status. A Blank status means the entry is not cleared or reconciled.
7. Once done press Save. To give you an idea on how it looks like in QBO, see this screenshot:

For additional information about the best practices when reconciling, see this article: Reconcile Hub. 

See the steps here on how to update the status for your QuickBooks transactions: Undo or remove transactions from reconciliations in QuickBooks Online

Please come back here if you need help with payroll transactions and reconciliation. Just mention me in your comments to let me know you replied to this thread.